Running shoes Nike INFINITYRN 4 PRM

The Nike INFINITYRN 4 PRM is a road running shoe designed for daily training with a focus on cushioned comfort and stability. Built for easy runs, recovery miles, and long-distance training, it suits recreational runners, beginners, and anyone seeking a durable workhorse for accumulating steady mileage.

The Nike INFINITYRN 4 PRM features a ReactX foam midsole that delivers soft, bouncy cushioning with responsive rebound. This injection-molded foam provides 13% more energy return than previous React versions while maintaining a medium-soft feel that protects on landing and propels on toe-off. The highly rockered geometry creates smooth heel-to-toe transitions and helps the shoe roll forward easily, even at slower paces. ReactX feels somewhat firm initially but softens after the first 20 to 30 kilometers, making the INFINITYRN 4 PRM best suited for easy and recovery-paced training rather than tempo work or speed sessions.

The upper uses a soft, stretchy Flyknit construction that molds to the foot in a compressive, sock-like manner. The material provides a secure lockdown through the midfoot with a gusseted tongue that enhances support and prevents tongue migration. The knit runs noticeably snug, and Nike recommends going up half a size for proper fit. While comfortable, the thick Flyknit can feel warm in hot conditions due to limited breathability. A flexible heel counter with ample padding accommodates runners with Achilles sensitivity.

The Nike INFINITYRN 4 PRM features a full-coverage rubber outsole with a classic waffle pattern that prioritizes durability and grip. The thick, durable rubber compound shows minimal wear even after extended use and provides solid traction on both dry and wet road surfaces. High sidewalls in the heel and midfoot, combined with a wide forefoot platform, create a stable base that keeps the foot centered without feeling restrictive, making the shoe suitable for neutral runners or those needing mild guidance.

Weight: 316g (EU 42.5)
Drop: 9mm
Stack: 39mm heel / 30mm forefoot
Terrain: Road
Pronation: Neutral to mild overpronation